Valid Geometry is not working

var a =below mentioned string of Geometry
var b= go.Geometry.stringify(go.Geometry.parse(a));
then in Shape code
geometry:b,
or
geometryString:b
is not working.
geometry: go.Geometry.parse(below string of Geometry) is not working.


Geometry=“M88.999999,123.5 L194,123.5 C198.69443,123.5 202.5,127.30558 202.5,132 L202.5,148 C202.5,152.69443 198.69443,156.5 194,156.5 L88.999999,156.5 C84.30558,156.5 80.499999,152.69443 80.499999,148 L80.499999,132 C80.499999,127.30558 84.30558,123.5 88.999999,123.5 z M143.00011,35.500011 C135.93059,35.500011 128.82861,36.183968 121.88943,37.535198 114.97128,38.882336 108.15134,40.905209 101.6198,43.553699 95.125114,46.187256 88.855522,49.463989 82.990478,53.300377 77.169189,57.108147 71.692108,61.503178 66.721397,66.369232 61.791446,71.195389 57.313045,76.530975 53.423744,82.229172 49.564391,87.883499 46.248203,93.949577 43.580531,100.25432 40.928817,106.52135 38.892249,113.08549 37.537242,119.75419 36.186664,126.40106 35.500022,133.21735 35.50003,140.00005 35.500022,146.38458 36.107688,152.79718 37.305187,159.06839 38.506191,165.35793 40.310916,171.56049 42.667083,177.51439 45.035976,183.50049 47.982768,189.28752 51.424034,194.72836 54.889739,200.20782 58.886676,205.38359 63.305122,210.12836 67.757972,214.91006 72.676681,219.29497 77.930786,223.17915 83.223808,227.0921 88.901542,230.52997 94.818359,233.41415 100.77102,236.31584 107.01494,238.68135 113.39432,240.45824 119.79893,242.24213 126.3926,243.44749 133.01381,244.04813 139.64412,244.64958 146.35609,244.64958 152.98639,244.04813 159.6076,243.44749 166.20128,242.24213 172.60588,240.45824 178.98526,238.68135 185.22919,236.31584 191.18184,233.41415 197.09866,230.52997 202.77638,227.0921 208.06943,223.17915 213.32353,219.29497 218.24222,214.91006 222.69507,210.12836 227.11354,205.38359 231.11046,200.20782 234.57616,194.72836 238.01742,189.28752 240.96422,183.50049 243.33311,177.51439 245.68927,171.56049 247.49402,165.35793 248.69501,159.06839 249.89252,152.79718 250.50018,146.38458 250.50018,140.00005 250.50018,133.21735 249.81354,126.40106 248.46297,119.75419 247.10796,113.08549 245.07138,106.52135 242.41966,100.25432 239.752,93.949577 236.43581,87.883499 232.57646,82.229172 228.68716,76.530975 224.20874,71.195389 219.27881,66.369232 214.3081,61.503178 208.83101,57.108147 203.00972,53.300377 197.14468,49.463989 190.87509,46.187256 184.3804,43.553699 177.84885,40.905209 171.02891,38.882336 164.11078,37.535198 157.17158,36.183968 150.06961,35.500011 143.00011,35.500011 z M143.00011,0.5 C221.70074,0.5 285.50021,62.956295 285.50021,140.00005 285.50021,170.09528 275.76517,197.96461 259.20969,220.75488 L257.3562,223.24271 257.59027,223.42036 C258.19791,223.93156 258.78549,224.47833 259.35025,225.06059 L366.39355,335.42041 C375.42981,344.73666 375.20285,359.61429 365.88663,368.65057 L361.81732,372.59753 C352.50107,381.63379 337.62344,381.40683 328.58716,372.09061 L221.54387,261.7308 C220.97909,261.14853 220.45052,260.54456 219.95808,259.92163 L218.72212,258.18558 216.89159,259.3042 C195.34601,272.12 170.05345,279.50009 143.00011,279.50009 64.299453,279.50009 0.49999711,217.04381 0.5,140.00005 0.49999711,62.956295 64.299476,0.5 143.00011,0.5 z”>

How is it not working?